If this specific file is an "Online" fix, you usually need to copy and paste the contents of the extracted folder into your main game directory, overwriting existing files.
For detailed video guides on extracting and installing these specific archives, you can check the HaDoanTV Tutorial page . [HaDoanTV.Com]ES.ON.rar
Ensure you have downloaded all parts of the game if it was split into multiple .rar archives. If this specific file is an "Online" fix,